Samsung LE40R81BX - Page 42

13 Circuit Descriptions
13-9
13-3-7 40" SMPS
13-3-8 40" INVERTER
AC Input
90-
264Vac
EMI Filter
Rectifier
Feedback
Protection
PWM
Control
Vcc
PWM
Control
Vcc
Switching
FET
Stand-by
Control
VCC
On/Off
Feed-back
Protection
13.5V / 1.0A
12.0V / 1.2A
5.4V / 3.4A
5Vsb
0.4A
Rectifier Regulator
Rectifier
Rectifier
Transformer
Transformer
PRIMARY SECONDARY
RFC
Control
P
F
C
C
C
F
L
C
C
F
L
2
nd
Resonant
Jin
Balance
Board
Voltage /
Current /
Detection
LAMP
Detection
PROTECTION
SWITCHING
Current
Controller
Voltage
Controller
Photo-
Coupler
UVLO
HV
DRIVE
CONTROLLER
ON/OFF
P_DIM
TRANSFORMER